Optical fibre cables - Part 1-404: Generic specification - Basic optical cable test procedures - Electrical test methods - Current-temperature test, method H4

IEC 60794-1-404:2022 defines a test standard to determine the optical performance and temperature characteristics of a hybrid cable under the maximum current. This document applies to optical phase conductor (OPPC). An optical phase conductor is made of multiple metallic wires that are exposed to the environment without any insulating or protective sheath and contain optical fibres.

Câbles à fibres optiques - Partie 1-404: Spécification générique - Procédures fondamentales d’essais des câbles optiques - Méthodes d’essais électriques - Essai de courant-température, méthode H4

IEC 60794-1-404:2022 définit une norme d’essai visant à déterminer les performances optiques et les caractéristiques thermiques d’un câble hybride sous courant maximal. Le présent document s’applique aux conducteurs de phase à fibres optiques (OPPC). Un conducteur de phase optique est composé de plusieurs brins métalliques exposés à l’environnement sans gaine isolante ou de protection, et contient des fibres optiques.

General Information

Status
Published
Publication Date
09-Feb-2022
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
10-Feb-2022
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IEC 60794-1-404:2022 - Optical fibre cables - Part 1-404: Generic specification - Basic optical cable test procedures - Electrical test methods - Current-temperature test, method H4
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IEC 60794-1-404
Edition 1.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-404: Generic specification – Basic optical cable test procedures –
Electrical test methods – Current-temperature test, method H4
Câbles à fibres optiques –
Partie 1-404: Spécification générique – Procédures fondamentales d’essais des
câbles optiques – Méthodes d’essais électriques – Essai de
courant-température, méthode H4
IEC 60794-1-404:2022-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60794-1-404
Edition 1.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-404: Generic specification – Basic optical cable test procedures –
Electrical test methods – Current-temperature test, method H4
Câbles à fibres optiques –
Partie 1-404: Spécification générique – Procédures fondamentales d’essais des
câbles optiques – Méthodes d’essais électriques – Essai de
courant-température, méthode H4
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-1078-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60794-1-404:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Method H4 – Current-temperature test ............................................................................. 5

4.1 Object ..................................................................................................................... 5

4.2 Lab conditions ........................................................................................................ 5

4.3 Sample ................................................................................................................... 6

4.4 Apparatus ............................................................................................................... 6

4.5 Procedure ............................................................................................................... 6

4.6 Requirements ......................................................................................................... 7

4.7 Details to be specified ............................................................................................. 7

Figure 1 – Current-temperature test set-up ............................................................................. 6

---------------------- Page: 4 ----------------------
IEC 60794-1-404:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-404: Generic specification –
Basic optical cable test procedures – Electrical test methods –
Current-temperature test, method H4
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 60794-1-404 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical

committee 86: Fibre optics. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
86A/2170/FDIS 86A/2185/RVD

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.
---------------------- Page: 5 ----------------------
– 4 – IEC 60794-1-404:2022 © IEC 2022

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,

can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 60794-1-404:2022 © IEC 2022 – 5 –
OPTICAL FIBRE CABLES –
Part 1-404: Generic specification –
Basic optical cable test procedures – Electrical test methods –
Current-temperature test, method H4
1 Scope

This part of IEC 60794 defines a test standard to determine the optical performance and

temperature characteristics of a hybrid cable under the maximum current.

This document applies to optical phase conductor (OPPC). An optical phase conductor is made

of multiple metallic wires that are exposed to the environment without any insulating or

protective sheath and contain optical fibres.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.

IEC 60793-1-46, Optical fibres – Part 1-46: Measurement methods and test procedures –

Monitoring of changes in optical transmittance

IEC TR 61597, Overhead electrical conductors – Calculation methods for stranded bare

conductors
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Method H4 – Current-temperature test
4.1 Object

The object of this test is to verify that the temperature of the sample and the attenuation of

monitored optical fibres comply with the general optical requirements during the maximum

current test.
4.2 Lab conditions

Tests shall be carried out in a natural convection lab, and the temperature shall be 23 °C ± 5 °C

without wind or solar radiation.
---------------------- Page: 7 ----------------------
– 6 – IEC 60794-1-404:2022 © IEC 2022
4.3 Sample

Preparation of the sample length and ends should ensure that flashover along its surface or

breakdown does not occur during the test.
The test length of the sample shall be no less than 6 m.

The test length of the optical fibre shall be no less than 100 m, and several fibres can be spliced

together if necessary. At least one fibre shall be tested from each buffer tube, fibre bundle or

cable element.
4.4 Apparatus

Test apparatus shall provide the frequency of AC voltage, voltage stability, and keep the current

value within the specified value ±3 % during the test. A typical test set-up is shown in Figure 1.

Key
1 electrical isolator
2 loop-spliced fibre
3 holder
4 thermocouple
...

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